HyunA and Sunmi go head to head competing for the sexy queen title.

On August 20, former Wonder Girls member Sunmi released a semi-erotic music video for her new song "24 Hours." There has been much speculation as to whether Sunmi will knock another former Wonder Girls member HyunA off her throne as a sexy queen.

In her new music video, Sunmi firmly caught the attention of viewers with her non-blatant sex appeal. You can hear the melodious voice of a singer in the background as the music video shows a bed scene with a male partner. The choreography is provocative with a lot of pelvic dance moves, and the revealing swim suit has made this music video a hot topic.

The move from girl to woman and the non-blatant sex appeal are reminiscent of Gain's "Bloom." But what's most intriguing for the viewers is the showdown they expect from both former Wonder Girls members.

Since her solo song release of "Bubble Pop" in 2011, HyunA has made her mark as the sexy queen with "Ice Cream." Her performance is undeniably unique, and often makes you fantasize about strange things.

Although the two have different styles, if Sunmi makes it as a sexy star with her new song, the two singers who are from the same girl group will compete against each other for the title, catching the attention of many fans.

Sunmi will have her first comeback stage on Mnet's "M Countdown" on August 22, and will release her songs on August 26.